<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    
    <title>监视属性-天气案例</title>
    <script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
    <div id="root">
        <h2>今天天气很{{info}}</h2>
        <!--@xxx 事件可以写一些简单的语句-->
        <button @click="isHot = !isHot;">切换天气状态</button>
        <button @click="changeWeather">切换天气状态</button>
    </div>
</body>
<script type="text/javascript" >
 new Vue({
   el:'#root', 
   data: { 
    isHot:true,
   },
   computed:{
    info(){
        return this.isHot ? '炎热' : '凉爽'
    }
   },
   methods: {
    changeWeather(){
        this.isHot = !this.isHot;
    }
   },
 })
</script>
</html>